103661377 has 2 divisors, whose sum is σ = 103661378. Its totient is φ = 103661376.

The previous prime is 103661357. The next prime is 103661381. The reversal of 103661377 is 773166301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82464561 + 21196816 = 9081^2 + 4604^2 .

It is an emirp because it is prime and its reverse (773166301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103661377 is a prime.

It is a super-2 number, since 2×103661377² = 21491362163072258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (103661357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51830688 + 51830689.

It is an arithmetic number, because the mean of its divisors is an integer number (51830689).

Almost surely, 2^103661377 is an apocalyptic number.

It is an amenable number.

103661377 is a deficient number, since it is larger than the sum of its proper divisors (1).

103661377 is an equidigital number, since it uses as much as digits as its factorization.

103661377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 103661377 is about 10181.4231323524. The cubic root of 103661377 is about 469.7559877174.

The spelling of 103661377 in words is "one hundred three million, six hundred sixty-one thousand, three hundred seventy-seven".